What is meant by annotation in java?
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what is constructer?what are the type of constructer with example.
How to load a class programmatically?
Write a class which checks whether a given number is prime or not. Write another class to implement the behavior of previous class and print the series of twin prime number upto a given range.
write a code in jsp to swap two numbers?
How do you create a jar file?
how can program polindrome using java
explain isalive() method under thread class?
Which is better openjdk or oracle jdk?
What are jpa repositories?
In a barber shop there are 2 doors. customer come in 1 door, leave in other. minimum # of chairs. barber spend his life in cutting. always barber can cut 1 customer. few chairs in the shop. if barber busy customer waits, if chairs full, customer leave. if no customer, barber sleeps. treat barber and customer as 2 threads. you can use Semaphore class with arrive and depart and count as parameter.
What is data persistence in java?
What is the use of rs next () in java?
Java J2EE 
